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  4. [Form 4] MACOM Technology Solutions Holdings, Inc. Insider Trading Activity

MTSI (MTSI) SVP Hwang logs planned insider stock sales

Filing Impact
(Very High)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

Technology Solutions Holdings, Inc. SVP of Global Sales Hwang Donghyun Thomas reported multiple open‑market sales of common stock on February 2, 2026. The transactions, executed at weighted average prices such as $217.38 and $235.81, were coded as open market sales.

According to the filing, the shares were sold under a Rule 10b5-1 trading plan adopted on August 11, 2025. After these sales, Hwang beneficially owns 38,604 shares of Technology Solutions Holdings common stock directly.

Positive

  • None.

Negative

  • None.
Insider Hwang Donghyun Thomas
Role SVP, Global Sales
Sold 5,274 shs ($1.19M)
Type Security Shares Price Value
Sale Common Stock 1,715 $217.38 $373K
Sale Common Stock 100 $225.01 $23K
Sale Common Stock 400 $226.58 $91K
Sale Common Stock 800 $227.92 $182K
Sale Common Stock 359 $228.70 $82K
Sale Common Stock 300 $230.20 $69K
Sale Common Stock 600 $231.45 $139K
Sale Common Stock 500 $232.68 $116K
Sale Common Stock 300 $234.83 $70K
Sale Common Stock 200 $235.81 $47K
Holdings After Transaction: Common Stock — 42,163 shares (Direct)
Footnotes (1)
  1. The shares were sold pursuant to a sales plan adopted by the Reporting Person on August 11, 2025 and intended to comply with Rule 10b5-1 under the Securities Exchange Act of 1934. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $217.33 to $218.11. The Reporting Person undertakes to provide to the Issuer, any shareholder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $226.23 to $227.13. The Reporting Person undertakes to provide to the Issuer, any shareholder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $227.35 to $228.19. The Reporting Person undertakes to provide to the Issuer, any shareholder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $228.35 to $229.18. The Reporting Person undertakes to provide to the Issuer, any shareholder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $229.94 to $230.46. The Reporting Person undertakes to provide to the Issuer, any shareholder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $231.16 to $231.93. The Reporting Person undertakes to provide to the Issuer, any shareholder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $232.31 to $233.05 . The Reporting Person undertakes to provide to the Issuer, any shareholder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $234.61 to $235.21 . The Reporting Person undertakes to provide to the Issuer, any shareholder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $235.68 to $235.94 . The Reporting Person undertakes to provide to the Issuer, any shareholder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
Form 4 Insider Transactions: What Each Field Means →
SEC Form 4
FORM 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number: 3235-0287
Estimated average burden
hours per response: 0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
X
 Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Hwang Donghyun Thomas
(Last) (First) (Middle)
C/O MACOM TECHNOLOGY SOLUTIONS HOLDINGS
100 CHELMSFORD STREET
(Street)
LOWELL MA 01851
(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
MACOM Technology Solutions Holdings, Inc. [ MTSI ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director 10% Owner
X Officer (give title below) Other (specify below)
SVP, Global Sales
3. Date of Earliest Transaction (Month/Day/Year)
02/02/2026
4. If Amendment, Date of Original Filed (Month/Day/Year)
 6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 02/02/2026 S(1) 1,715 D $217.38(2) 42,163 D
Common Stock 02/02/2026 S(1) 100 D $225.01 42,063 D
Common Stock 02/02/2026 S(1) 400 D $226.58(3) 41,663 D
Common Stock 02/02/2026 S(1) 800 D $227.92(4) 40,863 D
Common Stock 02/02/2026 S(1) 359 D $228.7(5) 40,504 D
Common Stock 02/02/2026 S(1) 300 D $230.2(6) 40,204 D
Common Stock 02/02/2026 S(1) 600 D $231.45(7) 39,604 D
Common Stock 02/02/2026 S(1) 500 D $232.68(8) 39,104 D
Common Stock 02/02/2026 S(1) 300 D $234.83(9) 38,804 D
Common Stock 02/02/2026 S(1) 200 D $235.81(10) 38,604 D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year) 7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Explanation of Responses:
1. The shares were sold pursuant to a sales plan adopted by the Reporting Person on August 11, 2025 and intended to comply with Rule 10b5-1 under the Securities Exchange Act of 1934.
2. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $217.33 to $218.11. The Reporting Person undertakes to provide to the Issuer, any shareholder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
3. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $226.23 to $227.13. The Reporting Person undertakes to provide to the Issuer, any shareholder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
4. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $227.35 to $228.19. The Reporting Person undertakes to provide to the Issuer, any shareholder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
5. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $228.35 to $229.18. The Reporting Person undertakes to provide to the Issuer, any shareholder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
6. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $229.94 to $230.46. The Reporting Person undertakes to provide to the Issuer, any shareholder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
7. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $231.16 to $231.93. The Reporting Person undertakes to provide to the Issuer, any shareholder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
8. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $232.31 to $233.05 . The Reporting Person undertakes to provide to the Issuer, any shareholder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
9. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $234.61 to $235.21 . The Reporting Person undertakes to provide to the Issuer, any shareholder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
10. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $235.68 to $235.94 . The Reporting Person undertakes to provide to the Issuer, any shareholder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
/s/ Ambra R. Roth, Attorney-in-Fact 02/04/2026
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

Source: View Original Filing on SEC EDGAR

FAQ

What did MTSI executive Hwang Donghyun Thomas report in this Form 4?

Hwang Donghyun Thomas, SVP of Global Sales at Technology Solutions Holdings (MTSI), reported a series of open‑market sales of common stock on February 2, 2026. Each transaction is listed with the number of shares sold and a weighted average sale price.

How many MTSI shares does Hwang Donghyun Thomas own after these sales?

After the reported transactions, Hwang Donghyun Thomas beneficially owns 38,604 shares of Technology Solutions Holdings common stock. This remaining balance is disclosed in the final line of Table I, reflecting direct ownership following the February 2, 2026 sales.

At what prices were the MTSI shares sold in this insider transaction?

The filing reports weighted average sale prices including $217.38, $225.01, $226.58, and up to $235.81. Footnotes explain that each figure reflects multiple trades within specified price ranges and that detailed breakdowns are available on request.

Were the MTSI insider sales made under a Rule 10b5-1 trading plan?

Yes. A footnote states the shares were sold under a sales plan adopted on August 11, 2025, intended to comply with Rule 10b5-1. Such plans pre‑schedule trades, allowing insiders to sell shares according to predetermined instructions.

What is the role of the insider involved in these MTSI share sales?

The reporting person, Hwang Donghyun Thomas, is identified as an officer of Technology Solutions Holdings, serving as SVP, Global Sales. The form indicates the transactions involve his directly owned common stock holdings.

Do the footnotes explain how the MTSI sale prices were calculated?

Yes. Each footnote clarifies that the reported prices are weighted averages, covering multiple trades within a price range. The insider undertakes to provide full details of the number of shares sold at each specific price within those ranges upon request.